Tidal forces on the Sun

(this page is provisional)

Animations of tidal forces on Solar surface

These animations show the tidal forces on Solar surface (highly exaggerated) and how they change over time.
The animations cover years 1996-2008 and are approximatelly 6.5 minutes long, ranging 44-47Mb in size each.
There is one shorter sample in WMV format (2nd row middle).

The data for the animations are calculated by earthly oceanographic tidal vector equations and by some equations from the paper by Ching Cheh Hung 2007, Appendix A. at the surface mesh of points spaced 5 apart.

If you want to place a link to these animations, please do NOT use their current location, as they may move in the future due to space requirements in the gallery site. Use the link http://semi.gurroa.cz/Astro/TidalAnim/ which is expected to be more permanent...

Recommended download is the file TFN. (second row, first or second image)


(TFE, AVI 44Mb)

(TFG, AVI 44Mb)

(TFN, AVI 47.7Mb)

(TFN, WMV 3Mb,
only year 1996)

(TFNR, AVI 47.7Mb)

(TFS, AVI 47.7Mb)
The animations show the exaggerated view of tidal forces on the Solar surface.


Key to the names:
The vectors are multiplied by 1E14 in most cases, only in the North-views they are multiplied by 2E14.
Blue vectors are inward, brown vectors are outward.
The arrow in TFN* shows one point on the Solar-surface, showing the Solar rotation below the tides. The same point is marked by a bold dot in TFE and TFG views, and is a center point in the TFS view.


These animations show the high variability of Solar tides - at the times, when the most important planets (Jupiter, Venus, Mercury, Earth) are rather in conjunction or opposition, the tides are highest. At the times of their quadratures, the tides are smallest.
On the TFS view (surface-point view) it is visible, how the tides travel over the Solar surface, and that the planets move in retrograde directions, with Mercury moving slowest from the point of view of Solar surface.

Some common features of Solar tides:

Some charts accompanying these animations will follow soon...

These images and some charts are included in a draft for my next work titled:
Some Periodicities in the Solar system compared with Sunspot cycle (current version of the draft)

Generation of the animations:

You may inspect these animations interactivelly in my program EphView.
At right bottom command line (5th line of edits on right bottom side), type this command:
tidal Sun @tfn
Substitute tfn for the name from the above table to change the configuration.
In the tidal viewer, command: add all adds all planets to the viewer (some views are configured to use only the major planets).
Mouse wheel on the viewer changes date by 1 day forward or backward.
To save the animation, use command saveanim Name.png which starts to generate PNG files from each displayed state, then command eph go +10y step 1d to generate 10 years worth of image files, stepped by 1 day, use saveanim (without parameter) to stop saving PNG files...
There are other options for evaluating functions and making charts from the calculated data in the EphView program...


Note about the file format

The AVI files use the DIV3 codec. If you know of some better or more compatible codec, please send me a note to regenerate these files. (note: VLC media player seems to be able to play them and should be enough portable...)
I'll rather use MPG file format, but did not find any free software to convert series of PNG files to a MPG video.
The only WMV file (TFN sample) was created by Windows Movie Maker on WXP, but I was very unhappy with the program, due to almost no options on the frame speed, almost no working options on the export format, no choice of different format than WMV, the program failed to export the file for unspecified reason when selecting any other bitrate - the user work with Windows Movie Maker is just terrible...